Allow changing default directory - and other settings.

[phinfinity]

We need to allow the user to change the default directory, as well as other settings like share size etc.
Default Directory and Share Size as a first priority

[amoghbl1]

I've implemented the change downloads directory part (pull req is on it's way), but don't know about the share size part, could you point me to where what needs to be changed?

[phinfinity]

awesome!
Share sizes are currently being set at : https://github.com/jujojujo2003/AnDCpp/blob/master/src/com/phinmadvader/andcpp/DCPPService.java#L482

[phinfinity]

directory changes have been addressed in 6e1e12f , leaving this issue open to address shared size customization.